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Participating in PHEMU21

JOA 2021, Vol. 11, No. 1, Page 3

Author(s): Alex Pratt, Nikolai Wünsche

Abstract: Every 6 years the orbital plane of Jupiter's Galilean satellites is edge-on to the Earth and these moons undergo a series of mutual eclipse and occultation phenomena, known as PHEMUs. This next occurs in 2021 and this article describes how to take part in the PHEMU21 campaign: to obtain accurately timed photometry of these events to contribute to studies of the satellites' orbits.